BIT TECH

Bit Tech

Bit Tech

Introduction

In view of the current high prevalence of arch dam construction, and is reflected in the large volume of technical properties of Mas concrete material weaknesses, combined with construction of Ertan Hydropower Station, the volume of high-strength Mas concrete mix ratio of dynamic strength properties of mass Mas concrete, (Hoffman 2004:32)full-size distribution strength and deformation characteristics of Mas concrete specimens and the damage and fracture characteristics were studied in Bit Tech for the first time established a high arch dam Mas concrete cracking optimized mix design system, for the first time Mas concrete dam under earthquake parameters were studied to complete the a full grade aggregate Mas concrete destroy the whole process of simulation studies, enriching the Mas concrete damage and fracture theory, development and improvement of Mas concrete materials testing technology.

Part 01

The work unit offices above having a combined total load of 50 km, built on loose gravel subsoil with a safe bearing capacity of 255kN/m2 Mas concrete is a multiphase medium by a composite material, with no continuity, heterogeneity of the characteristics of the load, its mechanical properties, deformation and failure mechanism very discrete, and there is a specimen of the size effect, which is the study of material properties of mass Mas concrete where the difficulty lies. (Grogan 2002:12)The high arch dam, the material properties of Mas concrete and rational utilization of an accurate assessment would be greatly related to the project safety and economy. Comprehensively and thoroughly carry out the mechanics of mass Mas concrete, deformation, crack resistance and other characteristics of research on high arch dam heel of the cracking mechanism and fracture mechanism of injury can be high arch dam design and construction to provide a reliable scientific basis for and refinement of the methodology of the arch dam design and improvement to ensure the project quality, improve dam safety, conservation of Mas concrete raw materials, save construction investment is of great significance.

The work unit offices above having a combined total load of 50 km, built on loose gravel subsoil with a safe bearing capacity of 255kN/m2 and its strength of the right arch dam safety evaluation, must be material (Mas concrete, dam foundation rock mass) and the role of resistance characteristics and effects of load simulation studies to proceed. Judging from the current dam construction and development trend analysis, (Ferguson 2005:4)the following are some issues needed further study.

Information (such as the dynamic strength can be increased by 30%, dynamic elastic modulus can be increased by 50%, etc.) and safety factor design method based on experience to evaluate the seismic safety of the dam. Domestic strength and deformation of Mas concrete materials, dynamic parameters of little research, and in the initial stage of Mas concrete material under dynamic loading and fracture characteristics of the constitutive relations is still blank, usually a number of materials for high-dynamic parameters of arch dam rationality is difficult to verify through the engineering practice. Most of Bit Tech's high arch dam proposed in ...